Door Threshold Height Adjustment for Sealing Performance
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Solution Overview
Problem
Existing door sills face challenges in maintaining airtightness, driving rain tightness, and soundproofing due to geometrical changes, which often result in leaks, especially when the door leaf is not correctly positioned in relation to the threshold.
Innovation Solution
A door sill with a height adjustment mechanism using a rotating adjusting disc between the insert profile and the groove, allowing for resilient height adjustment by rotating steps to achieve different sealing heights, ensuring consistent sealing performance even under varying conditions such as foot traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed threshold geometry is used with lip seals or hose seals, then the sealing function is provided, but the sealing performance deteriorates when the door leaf position changes or floor conditions are uneven
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed threshold geometry with an adjustable height mechanism. The threshold profile can be vertically positioned at different heights relative to the floor through an adjusting device, allowing the sealing surface to adapt to variations in door leaf position and floor unevenness. This dynamic adjustment capability ensures reliable sealing performance under varying operational conditions.
2Ease of manufacture
If the threshold height is fixed during installation, then the installation process is simple, but the sealing height changes when people step on the seal or floor conditions vary
Solution Approach 1:
The patent applies parameter changes by enabling vertical adjustment of the threshold profile position. The adjusting device allows the sealing height parameter to be modified according to actual installation conditions, such as floor unevenness or door leaf positioning requirements. This parameter adjustability maintains sealing height stability despite external loads or variations in installation environments.
3Reliability
If conventional seals are used without height adjustment capability, then the device complexity is low, but airtightness and soundproofing performance are insufficient
Solution Approach 1:
The patent applies segmentation by dividing the threshold assembly into separate functional components: a profile arrangement with sealing elements, a height adjustment device with adjustable profile, and a floor mounting structure. This segmentation allows the height adjustment function to be added independently while maintaining the simplicity of the sealing mechanism itself, thus improving airtightness and soundproofing without excessively increasing overall device complexity.
Data Source
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AI summary
Door threshold (2), comprising a profile arrangement, and a seal (24), wherein at least one height adjustment device (25) is arranged between the profile arrangement and the seal (24), and door, comprising a door frame (1), a door threshold (2) and a door leaf (3) pivotably received in the door frame (1), wherein the door threshold (2) is equipped with a seal (24) extending over the length of the door threshold, wherein the seal (24) can come into contact with the door leaf (3) when the door is closed, and wherein the door threshold is according to at least one of claims 1 to 13.